My 97 Bounder , 36ft with slide out, came with a 55 amp converter, but it was only 13.8v
I suspect the OP has something similar
My converter is in the outside bay/compartment under the kitchen, next to the entry door
The (2) 6v house batteries are up front behind the grill
The voltage at the batteries was always too low for a proper charge
I changed the converter to a power max adjustable voltage 75 amp model
And then added a third battery, a 200 ampHr deka 4d AGM
I put it in the compartment, it's a sealed a AGM, and there is ventilation in the compartment